What happened to ModelRed?

discontinued The URL on file (https://www.modelred.ai/) did not respond across three consecutive checks; the streak completed on 2026-09-19.

The address on file matched ModelRed's own domain with high confidence, so this observation is reported about ModelRed directly. See the methodology for how the match is made.

The vendor's own description, unedited:
ModelRed is an AI Security and Red Teaming Platform designed to help fortify AI models through adaptive red teaming, a process where it simulates potential attacks to identify vulnerabilities. The platform provides an ongoing penetration testing environment for Large Language Models (LLMs) and AI ag...

Live alternatives

No active same-category alternatives in the registry yet. The tools index carries everything else that is live.

How this was decided

Not an editorial call. The URL on file failed three consecutive checks, with a confirmation re-probe before the streak counted (a bot-wall response never counts as one), and the 3-miss rule marks the listing discontinued automatically. If the URL responds again, the registry restores it on its own: warn first, then active. Both directions are recorded as events.

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